Surge-believer for cables



NITEB STATES PATENT UFFTCE.

JAMES BINGHAM, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO F. D. BINGHAM,OF PHILADELPHIA, PENNSYLVANIA.

SURGE-RELIEVER FOR CABLES.

Specification of Letters Patent No. 29,338, dated July 24, 1860.

To all whom it may concern:

Be it known that I, JAMES BINGHAM, of the city and county ofPhiladelphia and State of Pennsylvania, have invented a new and ImprovedSurge-Believer for Anchor- Cables; and I do hereby declare that thefollowing is a. full, clear, and exact description of the same,reference being had to the accompanying drawings, forming part of thisspecification, in which- Figure l is a longitudinal view of a surgerliever constructed according to my invention with one link in-section.Fig. 2 is a transverse section of one link. Fig. 3 is a longitudinalsection of one link of a moditied construction. Fig. 4 is a transversesection of the same.

Similar letters of reference indicate corresponding parts in the severalfigures.

A, A, (Figs. l and 2) are short hollow cylinders of india-rubber havingtheir interiors only just large enough for the stirrup bolts a, a, topass through them.

Z2, Z), are wrought iron plates applied one to each end of eachindia-rubber cylinder. These plates are nearly large enough to cover theends of the cylinders, and each has four holes at equal distances fromits center and at equal distances apart, two holes for the two limbs ofeach of the two stirrup links or bolts a, a', to pass through. Thestirrup bolts pass through the central cavities e, e, of the cylindersin opposite directions so that a bow of one bolt is left protrudingthrough the exterior of each plate. Each bolt is secured by two nuts c,c, applied outside one of the plates b, b, one on the projecting end ofeach of its limbs; and the two bolts passing through each cylinder arearranged transversely to each other-that is to say, in such a mannerthat the limbs of each are interposed between the limbs of the other asshown in Fig. 1, where it is shown by the lettering that the limbs of a,alternate with the limbs of a. One cylinder A, two plates l), Z), andtwo bolts a, a, with their nuts constitute one link. The links areconnected by a stirrup bolt of one link passing through a stirrup boltof the adjacent one on either side of it as shown in Fig. l. Each of theso constructed links constitutes a spring the india-rubber beingcompressed between the plates by any strain in the form of a pull on thebows of the stirrup bolts. It will be desirable in most cases to useseveral of these elastic links connected together though in some casesone or two might be used. The connection with the cable may be made withshackles d, d, passing through the outer bows of the end links.

The surge reliever thus constructed will most ei'ectually relieve thecable to which it is applied of any strain, and it possesses theadvantage over other contrivances for the same purpose in the simplicityof its construction, no forging being necessary eX- cept in the bendingof the stirrup bolts, and in its not requiring to be made of greatweight. It is also capable of being very easily repaired.

The link shown in Figs. 3, and 4t, only diil'ers from that shown inFigs. l, and 2, in the india rubber cylinder A, having no central cavityc, for the stirrup bolts to pass through but being perfectly solid withthe exception of having four longitudinal holes through which the limbsof the stirrup bolts pass tightly.

Having thus described my invention I claim as new and desire to secureby Letters Patent as an improved article of manufacture:

A surge reliever consisting of a chain having each of its links composedof two stirrup bolts or links a, a, the limbs of which are interposedtheir ends passing through heads or plates Z), l), and secured fromwithdrawal by nuts c, c, the heads being separated by a block of rubberA, through which the links also pass all as herein shown and described.

JAS. BINGHAM.

Witnesses CHARLES D. FREEMAN, JOHN B. SPRINGER.

